My biggest regret is when I got introduced to this back in 2012, I tried to buy £200 worth, the platform was down and I never bothered, just recently woke up to it again at over £4k per coin, it is a physiological thing where I don't want to buy at that price.
One of my biggest regret about bitcoin is that I never believe about it before. I was still too young when I discovered bitcoin, I though it was a scam when one of my friends introduced it to me. During that time, cryptocurrency is not a thing and only a few people do bitcoins. During that time, the price of bitcoin is less than a hundred dollars. I can't even imagine how my life will changed if I invested on it before.